*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
#include "avi.h"
#include "dv.h"
+#include "riff.h"
#undef NDEBUG
#include <assert.h>
int scale;
int rate;
- int sample_size; /* audio only data */
- int start;
+ int sample_size; /* size of one sample (or packet) (in the rate/scale sense) in bytes */
- int cum_len; /* temporary storage (used during seek) */
+ int64_t cum_len; /* temporary storage (used during seek) */
int prefix; ///< normally 'd'<<8 + 'c' or 'w'<<8 + 'b'
int prefix_count;
} AVIContext;
static int avi_load_index(AVFormatContext *s);
+static int guess_ni_flag(AVFormatContext *s);
#ifdef DEBUG
static void print_tag(const char *str, unsigned int tag, int size)
return 0;
}
+static int read_braindead_odml_indx(AVFormatContext *s, int frame_num){
+ AVIContext *avi = s->priv_data;
+ ByteIOContext *pb = &s->pb;
+ int longs_pre_entry= get_le16(pb);
+ int index_sub_type = get_byte(pb);
+ int index_type = get_byte(pb);
+ int entries_in_use = get_le32(pb);
+ int chunk_id = get_le32(pb);
+ int64_t base = get_le64(pb);
+ int stream_id= 10*((chunk_id&0xFF) - '0') + (((chunk_id>>8)&0xFF) - '0');
+ AVStream *st;
+ AVIStream *ast;
+ int i;
+ int64_t last_pos= -1;
+ int64_t filesize= url_fsize(&s->pb);
+
+#ifdef DEBUG_SEEK
+ av_log(s, AV_LOG_ERROR, "longs_pre_entry:%d index_type:%d entries_in_use:%d chunk_id:%X base:%16LX\n",
+ longs_pre_entry,index_type, entries_in_use, chunk_id, base);
+#endif
+
+ if(stream_id > s->nb_streams || stream_id < 0)
+ return -1;
+ st= s->streams[stream_id];
+ ast = st->priv_data;
+
+ if(index_sub_type)
+ return -1;
+
+ get_le32(pb);
+
+ if(index_type && longs_pre_entry != 2)
+ return -1;
+ if(index_type>1)
+ return -1;
+
+ if(filesize > 0 && base >= filesize){
+ av_log(s, AV_LOG_ERROR, "ODML index invalid\n");
+ if(base>>32 == (base & 0xFFFFFFFF) && (base & 0xFFFFFFFF) < filesize && filesize <= 0xFFFFFFFF)
+ base &= 0xFFFFFFFF;
+ else
+ return -1;
+ }
+
+ for(i=0; i<entries_in_use; i++){
+ if(index_type){
+ int64_t pos= get_le32(pb) + base - 8;
+ int len = get_le32(pb);
+ int key= len >= 0;
+ len &= 0x7FFFFFFF;
+
+#ifdef DEBUG_SEEK
+ av_log(s, AV_LOG_ERROR, "pos:%Ld, len:%X\n", pos, len);
+#endif
+ if(last_pos == pos || pos == base - 8)
+ avi->non_interleaved= 1;
+ else
+ av_add_index_entry(st, pos, ast->cum_len, len, 0, key ? AVINDEX_KEYFRAME : 0);
+
+ if(ast->sample_size)
+ ast->cum_len += len / ast->sample_size;
+ else
+ ast->cum_len ++;
+ last_pos= pos;
+ }else{
+ int64_t offset, pos;
+ int duration;
+ offset = get_le64(pb);
+ get_le32(pb); /* size */
+ duration = get_le32(pb);
+ pos = url_ftell(pb);
+
+ url_fseek(pb, offset+8, SEEK_SET);
+ read_braindead_odml_indx(s, frame_num);
+ frame_num += duration;
+
+ url_fseek(pb, pos, SEEK_SET);
+ }
+ }
+ avi->index_loaded=1;
+ return 0;
+}
+
+static void clean_index(AVFormatContext *s){
+ int i;
+ int64_t j;
+
+ for(i=0; i<s->nb_streams; i++){
+ AVStream *st = s->streams[i];
+ AVIStream *ast = st->priv_data;
+ int n= st->nb_index_entries;
+ int max= ast->sample_size;
+ int64_t pos, size, ts;
+
+ if(n != 1 || ast->sample_size==0)
+ continue;
+
+ while(max < 1024) max+=max;
+
+ pos= st->index_entries[0].pos;
+ size= st->index_entries[0].size;
+ ts= st->index_entries[0].timestamp;
+
+ for(j=0; j<size; j+=max){
+ av_add_index_entry(st, pos+j, ts + j/ast->sample_size, FFMIN(max, size-j), 0, AVINDEX_KEYFRAME);
+ }
+ }
+}
+
+static int avi_read_tag(ByteIOContext *pb, char *buf, int maxlen, unsigned int size)
+{
+ offset_t i = url_ftell(pb);
+ size += (size & 1);
+ get_strz(pb, buf, maxlen);
+ url_fseek(pb, i+size, SEEK_SET);
+ return 0;
+}
+
static int avi_read_header(AVFormatContext *s, AVFormatParameters *ap)
{
AVIContext *avi = s->priv_data;
unsigned int size, nb_frames;
int i, n;
AVStream *st;
- AVIStream *ast;
+ AVIStream *ast = NULL;
int xan_video = 0; /* hack to support Xan A/V */
avi->stream_index= -1;
}
break;
case MKTAG('d', 'm', 'l', 'h'):
- avi->is_odml = 1;
- url_fskip(pb, size + (size & 1));
- break;
+ avi->is_odml = 1;
+ url_fskip(pb, size + (size & 1));
+ break;
case MKTAG('a', 'v', 'i', 'h'):
- /* avi header */
+ /* avi header */
/* using frame_period is bad idea */
frame_period = get_le32(pb);
bit_rate = get_le32(pb) * 8;
- url_fskip(pb, 4 * 4);
+ get_le32(pb);
+ avi->non_interleaved |= get_le32(pb) & AVIF_MUSTUSEINDEX;
+
+ url_fskip(pb, 2 * 4);
n = get_le32(pb);
for(i=0;i<n;i++) {
AVIStream *ast;
if (!ast)
goto fail;
st->priv_data = ast;
- }
+ }
url_fskip(pb, size - 7 * 4);
break;
case MKTAG('s', 't', 'r', 'h'):
#endif
if(tag1 == MKTAG('i', 'a', 'v', 's') || tag1 == MKTAG('i', 'v', 'a', 's')){
/*
- * After some consideration -- I don't think we
- * have to support anything but DV in a type1 AVIs.
- */
- if (s->nb_streams != 1)
- goto fail;
-
- if (handler != MKTAG('d', 'v', 's', 'd') &&
- handler != MKTAG('d', 'v', 'h', 'd') &&
- handler != MKTAG('d', 'v', 's', 'l'))
- goto fail;
-
- ast = s->streams[0]->priv_data;
- av_freep(&s->streams[0]->codec->extradata);
- av_freep(&s->streams[0]);
- s->nb_streams = 0;
- avi->dv_demux = dv_init_demux(s);
- if (!avi->dv_demux)
- goto fail;
- s->streams[0]->priv_data = ast;
- url_fskip(pb, 3 * 4);
- ast->scale = get_le32(pb);
- ast->rate = get_le32(pb);
- stream_index = s->nb_streams - 1;
- url_fskip(pb, size - 7*4);
+ * After some consideration -- I don't think we
+ * have to support anything but DV in a type1 AVIs.
+ */
+ if (s->nb_streams != 1)
+ goto fail;
+
+ if (handler != MKTAG('d', 'v', 's', 'd') &&
+ handler != MKTAG('d', 'v', 'h', 'd') &&
+ handler != MKTAG('d', 'v', 's', 'l'))
+ goto fail;
+
+ ast = s->streams[0]->priv_data;
+ av_freep(&s->streams[0]->codec->extradata);
+ av_freep(&s->streams[0]);
+ s->nb_streams = 0;
+ avi->dv_demux = dv_init_demux(s);
+ if (!avi->dv_demux)
+ goto fail;
+ s->streams[0]->priv_data = ast;
+ url_fskip(pb, 3 * 4);
+ ast->scale = get_le32(pb);
+ ast->rate = get_le32(pb);
+ stream_index = s->nb_streams - 1;
+ url_fskip(pb, size - 7*4);
break;
}
if (stream_index >= s->nb_streams) {
url_fskip(pb, size - 8);
+ /* ignore padding stream */
+ if (tag1 == MKTAG('p', 'a', 'd', 's'))
+ stream_index--;
break;
}
st = s->streams[stream_index];
}
av_set_pts_info(st, 64, ast->scale, ast->rate);
- ast->start= get_le32(pb); /* start */
+ ast->cum_len=get_le32(pb); /* start */
nb_frames = get_le32(pb);
st->start_time = 0;
// av_log(NULL, AV_LOG_DEBUG, "%d %d %d %d\n", ast->rate, ast->scale, ast->start, ast->sample_size);
switch(tag1) {
- case MKTAG('v', 'i', 'd', 's'):
+ case MKTAG('v', 'i', 'd', 's'):
codec_type = CODEC_TYPE_VIDEO;
ast->sample_size = 0;
av_log(s, AV_LOG_ERROR, "unknown stream type %X\n", tag1);
goto fail;
}
+ ast->frame_offset= ast->cum_len * FFMAX(ast->sample_size, 1);
url_fskip(pb, size - 12 * 4);
break;
case MKTAG('s', 't', 'r', 'f'):
break;
case CODEC_TYPE_AUDIO:
get_wav_header(pb, st->codec, size);
+ if(ast->sample_size && st->codec->block_align && ast->sample_size % st->codec->block_align)
+ av_log(s, AV_LOG_DEBUG, "invalid sample size or block align detected\n");
if (size%2) /* 2-aligned (fix for Stargate SG-1 - 3x18 - Shades of Grey.avi) */
url_fskip(pb, 1);
/* special case time: To support Xan DPCM, hardcode
}
}
break;
+ case MKTAG('i', 'n', 'd', 'x'):
+ i= url_ftell(pb);
+ if(!url_is_streamed(pb)){
+ read_braindead_odml_indx(s, 0);
+ }
+ url_fseek(pb, i+size, SEEK_SET);
+ break;
+ case MKTAG('I', 'N', 'A', 'M'):
+ avi_read_tag(pb, s->title, sizeof(s->title), size);
+ break;
+ case MKTAG('I', 'A', 'R', 'T'):
+ avi_read_tag(pb, s->author, sizeof(s->author), size);
+ break;
+ case MKTAG('I', 'C', 'O', 'P'):
+ avi_read_tag(pb, s->copyright, sizeof(s->copyright), size);
+ break;
+ case MKTAG('I', 'C', 'M', 'T'):
+ avi_read_tag(pb, s->comment, sizeof(s->comment), size);
+ break;
+ case MKTAG('I', 'G', 'N', 'R'):
+ avi_read_tag(pb, s->genre, sizeof(s->genre), size);
+ break;
default:
/* skip tag */
size += (size & 1);
return -1;
}
- assert(!avi->index_loaded);
- avi_load_index(s);
+ if(!avi->index_loaded && !url_is_streamed(pb))
+ avi_load_index(s);
avi->index_loaded = 1;
+ avi->non_interleaved |= guess_ni_flag(s);
+ if(avi->non_interleaved)
+ clean_index(s);
return 0;
}
if (avi->dv_demux) {
size = dv_get_packet(avi->dv_demux, pkt);
- if (size >= 0)
- return size;
+ if (size >= 0)
+ return size;
}
if(avi->non_interleaved){
// av_log(NULL, AV_LOG_DEBUG, "%d\n", i);
if(i>=0){
int64_t pos= best_st->index_entries[i].pos;
- pos += avi->movi_list + best_ast->packet_size - best_ast->remaining;
- url_fseek(&s->pb, pos, SEEK_SET);
+ pos += best_ast->packet_size - best_ast->remaining;
+ url_fseek(&s->pb, pos + 8, SEEK_SET);
// av_log(NULL, AV_LOG_DEBUG, "pos=%Ld\n", pos);
- if(best_ast->remaining)
- avi->stream_index= best_stream_index;
- else
- avi->stream_index= -1;
+ assert(best_ast->remaining <= best_ast->packet_size);
+
+ avi->stream_index= best_stream_index;
+ if(!best_ast->remaining)
+ best_ast->packet_size=
+ best_ast->remaining= best_st->index_entries[i].size;
}
}
AVIStream *ast= st->priv_data;
int size;
- if(ast->sample_size == 0)
+ if(ast->sample_size <= 1) // minorityreport.AVI block_align=1024 sample_size=1 IMA-ADPCM
size= INT_MAX;
else if(ast->sample_size < 32)
size= 64*ast->sample_size;
// pkt->dts += ast->start;
if(ast->sample_size)
pkt->dts /= ast->sample_size;
-//av_log(NULL, AV_LOG_DEBUG, "dts:%Ld offset:%d %d/%d smpl_siz:%d base:%d st:%d size:%d\n", pkt->dts, ast->frame_offset, ast->scale, ast->rate, ast->sample_size, AV_TIME_BASE, n, size);
+//av_log(NULL, AV_LOG_DEBUG, "dts:%Ld offset:%Ld %d/%d smpl_siz:%d base:%d st:%d size:%d\n", pkt->dts, ast->frame_offset, ast->scale, ast->rate, ast->sample_size, AV_TIME_BASE, avi->stream_index, size);
pkt->stream_index = avi->stream_index;
if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
for(i=sync=url_ftell(pb); !url_feof(pb); i++) {
int j;
- if (i >= avi->movi_end) {
- if (avi->is_odml) {
- url_fskip(pb, avi->riff_end - i);
- avi->riff_end = avi->movi_end = url_fsize(pb);
- } else
- break;
- }
+ if (i >= avi->movi_end) {
+ if (avi->is_odml) {
+ url_fskip(pb, avi->riff_end - i);
+ avi->riff_end = avi->movi_end = url_fsize(pb);
+ } else
+ break;
+ }
for(j=0; j<7; j++)
d[j]= d[j+1];
//parse ix##
if( (d[0] == 'i' && d[1] == 'x' && n < s->nb_streams)
- //parse JUNK
+ //parse JUNK
||(d[0] == 'J' && d[1] == 'U' && d[2] == 'N' && d[3] == 'K')){
url_fskip(pb, size);
//av_log(NULL, AV_LOG_DEBUG, "SKIP\n");
if( ((ast->prefix_count<5 || sync+9 > i) && d[2]<128 && d[3]<128) ||
d[2]*256+d[3] == ast->prefix /*||
(d[2] == 'd' && d[3] == 'c') ||
- (d[2] == 'w' && d[3] == 'b')*/) {
+ (d[2] == 'w' && d[3] == 'b')*/) {
//av_log(NULL, AV_LOG_DEBUG, "OK\n");
if(d[2]*256+d[3] == ast->prefix)
first = get_byte(pb);
clr = get_byte(pb);
- if(!clr) /* all 256 colors used */
- clr = 256;
+ if(!clr) /* all 256 colors used */
+ clr = 256;
flags = get_le16(pb);
p = 4;
for (k = first; k < clr + first; k++) {
#endif
if(i==0 && pos > avi->movi_list)
avi->movi_list= 0; //FIXME better check
+ pos += avi->movi_list;
index = ((tag & 0xff) - '0') * 10;
index += ((tag >> 8) & 0xff) - '0';
ast = st->priv_data;
#if defined(DEBUG_SEEK)
- av_log(NULL, AV_LOG_DEBUG, "%d cum_len=%d\n", len, ast->cum_len);
+ av_log(NULL, AV_LOG_DEBUG, "%d cum_len=%Ld\n", len, ast->cum_len);
#endif
if(last_pos == pos)
avi->non_interleaved= 1;
else
- av_add_index_entry(st, pos, ast->cum_len, 0, (flags&AVIIF_INDEX) ? AVINDEX_KEYFRAME : 0);
+ av_add_index_entry(st, pos, ast->cum_len, len, 0, (flags&AVIIF_INDEX) ? AVINDEX_KEYFRAME : 0);
if(ast->sample_size)
ast->cum_len += len / ast->sample_size;
else
}
}
the_end:
- avi->non_interleaved |= guess_ni_flag(s);
url_fseek(pb, pos, SEEK_SET);
return 0;
}
if (st2->nb_index_entries <= 0)
continue;
-// assert(st2->codec.block_align);
+// assert(st2->codec->block_align);
assert(st2->time_base.den == ast2->rate);
assert(st2->time_base.num == ast2->scale);
index = av_index_search_timestamp(
if (avi->dv_demux)
dv_flush_audio_packets(avi->dv_demux);
/* do the seek */
- pos += avi->movi_list;
url_fseek(&s->pb, pos, SEEK_SET);
avi->stream_index= -1;
return 0;
AVStream *st = s->streams[i];
AVIStream *ast = st->priv_data;
av_free(ast);
- av_free(st->codec->extradata);
av_free(st->codec->palctrl);
}
return 0;
}
-static AVInputFormat avi_iformat = {
+AVInputFormat avi_demuxer = {
"avi",
"avi format",
sizeof(AVIContext),
avi_read_close,
avi_read_seek,
};
-
-int avidec_init(void)
-{
- av_register_input_format(&avi_iformat);
- return 0;
-}
projects / ffmpeg / blobdiff